Studi Eksperimental Pengaruh Penambahan Epoxy pada Elektrolit Padat Berbasis Chitosan - PEO Polymer Blend Terhadap Konduktivitas Ioniknya

Vianino, Nichollas (2023) Studi Eksperimental Pengaruh Penambahan Epoxy pada Elektrolit Padat Berbasis Chitosan - PEO Polymer Blend Terhadap Konduktivitas Ioniknya. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Solid Polymer Electrolyte (SPE) dikembangkan sebagai alternatif penggunaan elektrolit cair untuk meningkatkan keamanan dari baterai ion litium. Chitosan – PEO polymer blend digunakan sebagai polymer host SPE karena sifatnya yang amorfus sehingga mampu meningkatkan mobilitas ion. Penambahan garam LiClO4 sebagai sumber ion litium dilakukan untuk menurunkan kristalinitas sehingga konduktivitas ionik SPE meningkat. Epoxy ditambahkan untuk meningkatkan konduktivitas ionik SPE. Film SPE diproduksi dengan metode solution casting. Pada penelitian ini chitosan dan PEO sebagai polymer host beserta garam LiClO4 dilarutkan dengan asam asetat 1% lalu ditambahkan dengan epoxy resin berjenis Bisphenol-A dengan hardener modified Cycloaliphatic Amine dimana variasi persentase massa epoxy resin yang ditambahkan adalah 3%, 5% dan 7% dari massa total SPE murni. Spesimen SPE diuji konduktivitas ionik menggunakan Electrochemical Impedance Spectroscopy (EIS) serta dikarakterisasi dengan pengujian Scanning Electron Microscopy (SEM) untuk mengamati morfologi permukaan cross sectional material, X-Ray Diffraction (XRD) untuk mengamati perubahan properti kristal material, dan Fourier Transform Infrared (FTIR) untuk mengamati fenomena kimia yang terjadi. Penambahan epoxy berpengaruh terhadap peningkatan konduktivitas ionik dari SPE yang signifikan hingga penambahan epoxy sebanyak 5% (optimum) yang mencapai angka 1,281 × 10−4 S/cm. Pada SPE + 7% epoxy, terjadi sedikit penurunan konduktivitas ionik (1,150 × 10−4 S/cm), yang didukung dengan data SEM dimana epoxy menutupi permukaan spesimen. Hasil pengamatan XRD menunjukkan munculnya puncak kristalin pada variasi SPE + 7% epoxy pada 2θ = 29,5° dan 37°. Melalui karakterisasi FTIR, dapat diamati bahwa penambahan epoxy tidak menimbulkan kemunculan puncak baru, yang mengindikasikan tidak terdapat ikatan baru yang terbentuk pada SPE.
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Solid Polymer Electrolyte (SPE) was developed as an alternative to the use of liquid electrolyte to improve the safety of lithium-ion batteries. Chitosan – PEO polymer blend was used as the host polymer of SPE due to its amorphous nature so as to increase ion mobility. The addition of LiClO4 salt as a source of lithium ions is done to reduce crystallinity so that the ionic conductivity of SPE increases. Epoxy was added to increase the ionic conductivity of SPE. SPE films were produced by solution casting method. In this study, chitosan, and PEO as host polymers along with LiClO4 salt were dissolved with 1% acetic acid and then added with Bisphenol-A type epoxy resin with modified Cycloaliphatic Amine hardener where the variation in the mass percentage of epoxy resin added was 3%, 5%, and 7% of the total mass of pure SPE. SPE specimens were tested for ionic conductivity using Electrochemical Impedance Spectroscopy (EIS) and characterized by Scanning Electron Microscopy (SEM) testing to observe the cross-sectional surface morphology of the material, X-Ray Diffraction (XRD) to observe changes in material crystal properties, and Fourier Transform Infrared (FTIR) to observe chemical phenomena that occur. The addition of epoxy has the effect of increasing the ionic conductivity of SPE significantly until the addition of 5% epoxy (optimum) which reaches 1,281 × 10-4 S/cm. In SPE + 7% epoxy, there is a slight decrease in ionic conductivity (1,150 × 10-4 S/cm), which is supported by SEM data where epoxy covers the surface of the specimen. XRD observations showed the appearance of crystalline peaks in the SPE + 7% epoxy variation at 2θ = 29,5° and 37°. Through FTIR characterization, it can be observed that the addition of epoxy does not cause the appearance of new peaks, which indicates that no new bonds are formed in SPE.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Chitosan, Epoxy, Ionic Conductivity, SPE, Chitosan, Epoxy, Konduktivitas Ionik, SPE
Subjects:	T Technology > TP Chemical technology > TP1140 Polymers
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Nichollas Vianino
Date Deposited:	05 Aug 2023 08:24
Last Modified:	05 Aug 2023 08:24
URI:	http://repository.its.ac.id/id/eprint/102201

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